Glossary of Auto Terms

DriverSide's Car Dictionary has the most comprehensive definitions of automotive terms. This auto glossary can help you decipher what your mechanic is fixing and what the purpose or function of the particular auto part or accessory is for. We have taken the mystery out of automotive service jargon, so that you don't have to.

Oil Filter

These are the most often replaced items on a car, so get familiar with them. As the name implies, they simply filter the engine's oil, and being as oil is the lifeblood of any engine, their job is crucial. Oil filters should be replaced with every single oil change--and you should strongly consider OEM-specific oil filters as well. It is a good idea to buy these in bulk if you change your own oil--with crush washers, of course.